Organic light emitting diode modified by gold nanoparticle and graphene oxide composite structure and preparation method of organic light emitting diode

A composite technology of gold nanoparticles and graphene, which is applied in nanotechnology, nanotechnology, organic semiconductor devices, etc., to achieve the effects of improving electroluminescent performance, balancing the number of holes and electron pairs, and improving brightness and efficiency

Pending Publication Date: 2020-03-31
HUBEI UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, as a new technology, OLED is not yet mature, and there are still many areas to be improved in terms of device performance, manufacturing process, service life, and production cost.

Method used

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  • Organic light emitting diode modified by gold nanoparticle and graphene oxide composite structure and preparation method of organic light emitting diode
  • Organic light emitting diode modified by gold nanoparticle and graphene oxide composite structure and preparation method of organic light emitting diode
  • Organic light emitting diode modified by gold nanoparticle and graphene oxide composite structure and preparation method of organic light emitting diode

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Embodiment 1

[0034] The invention provides an organic light-emitting diode (OLED) modified by gold nanoparticles based on graphene oxide as a hole injection layer and a preparation method thereof, such as figure 1 As shown, the organic light-emitting diode is in order from bottom to top: ITO glass substrate 1, graphene oxide layer 2, NPB hole transport layer 3, gold nanoparticle layer 4, NPB barrier layer 5, Alq 3 Luminescent layer 6, Alq 3 Electron transport layer 7, LiF electron injection layer 8, metal cathode 9. The preparation process is as follows:

[0035] (1) The ITO glass substrate was ultrasonically cleaned with acetone, absolute ethanol, and deionized water for 5 minutes respectively, then dried with pure nitrogen gas, and finally treated with oxygen plasma for 5 minutes.

[0036] (2) Spin-coat the GO solution with a concentration of 0.25mg / ml on the cleaned glass substrate at a rotation speed of 6000-8000r / min, a time of 40-60S, and anneal at 70-130°C for 5-10min.

[0037] (...

Embodiment 2

[0043] The present invention also provides a kind of organic light-emitting diode (OLED) based on gold nanoparticle graphene oxide composite structure modification hole transport layer and preparation method thereof, and the method comprises the following steps:

[0044] (1) The ITO glass substrate was ultrasonically cleaned with acetone, absolute ethanol, and deionized water for 5 minutes respectively, then dried with pure nitrogen gas, and finally treated with oxygen plasma for 5 minutes.

[0045] (2) Put the glass substrate in (1) into the thermal evaporation system, vacuumize, when the pressure is lower than 10 -7 After Torr, 30nm NPB was deposited on the substrate as a hole transport layer by thermal evaporation at a deposition rate of 0.05nm / s.

[0046] (3) With 20ml, 0.0025mol / l chloroauric acid solution is added 1.8ml under the condition of boiling water, the gold nanoparticle solution that 0.05g / ml trisodium citrate reacts for 10min and n-butylamine modified 1mg / ml ...

Embodiment 3

[0050] The present invention also provides a kind of organic light-emitting diode (OLED) and preparation method thereof based on gold nanoparticle graphene oxide composite structure as hole injection layer, and the method comprises the following steps:

[0051] (1) The ITO glass substrate was ultrasonically cleaned with acetone, absolute ethanol, and deionized water for 5 minutes respectively, then dried with pure nitrogen gas, and finally treated with oxygen plasma for 5 minutes.

[0052] (2) With 20ml, 0.0025mol / l chloroauric acid solution is added 1.8ml under the condition of boiling water, the gold nanoparticle solution that 0.05g / ml trisodium citrate reacts for 10min and n-butylamine modified 1mg / ml of GO solution was mixed at a volume ratio of 1:1 and reacted at 80 °C for 12 h. The obtained mixed solution is diluted to 10% and spin-coated on the cleaned glass substrate at a rotation speed of 8000-10000r / min, a time of 40-60S, and annealing at 70-130°C for 5-10min.

[0...

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Abstract

The invention provides an organic light-emitting diode modified by a gold nanoparticle and graphene oxide composite structure and a preparation method of the organic light-emitting diode. The diode comprises an ITO anode, a hole transport layer, a barrier layer, a light emitting layer, an electron transport layer, an electron injection layer and a metal cathode from bottom to top, and is characterized in that the hole transport layer is modified by a gold nanoparticle and graphene oxide composite structure. The organic light emitting diode based on gold nanoparticle and novel two-dimensional material composite structure modification is simple in preparation method, good in repeatability and low in cost, and has a wide application prospect.

Description

technical field [0001] The invention relates to an organic light-emitting diode modified with a composite structure of gold nanoparticles and graphene oxide and a preparation method thereof, belonging to the field of organic light-emitting diodes. Background technique [0002] As a new generation of display technology, OLED has the incomparable advantages of LCD flat panel display: self-illumination, wide viewing angle, flexible display, short response time, ultra-thin design (thickness can be less than 1mm), low operating voltage (2 ~ 10V ), etc., so the position in the display field is becoming increasingly important. With the further development of the technical level, the application range of OLED is becoming wider and wider, and the products are more and more favored by consumers. However, as a new technology, OLED is not yet mature, and there are still many areas to be improved in terms of device performance, manufacturing process, service life, and production cost. ...

Claims

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Application Information

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IPC IPC(8): H01L51/50H01L51/54H01L51/56B82Y10/00B82Y30/00
CPCB82Y10/00B82Y30/00H10K50/155H10K2102/00H10K71/00
Inventor 梅菲冯佳欢石五行周远明
Owner HUBEI UNIV OF TECH
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